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  • MSE Installing error 0x80070643

    Uninstalling Microsoft Security Essentials

    Summary

    This article collects a number of solutions for uninstalling Microsoft Security Essentials.
    Details

    NOTE: If you are attempting to remove MSE after encountering 0x80073b01 and attempts to remove MSE are met with an error regarding permissions and contacting your administrator, your PC is infected and it has modified the file and folder structure preventing proper functioning or removal of Microsoft Security Essentials in order to reinstall it.
    You should download Hitman Pro Kickstart on an uninfected computer, copy it to a USB flash drive and use it to repair MSE and remove the root kit virus, ZeroAccess/Sirefef. Instructions and download here:http://www.surfright.nl/en/kickstart
    *******************************************************************
    Typically, Microsoft Security Essentials can be removed by going to Control Panel - Programs and running the uninstall there.
    However, there are times when this won't work.
    Official Solution:
    Microsoft has published a knowledgebase article for how to manually remove Microsoft Security Essentials:
    http://support.microsoft.com/kb/2483120

    -------------------------------------------------------------------
    The following is the uninstall part of what MS Support provided when responding to an inquiry where uninstalling was a problem and our normally recommended procedures were not working.

    Use our FixIt Tool to uninstall Microsoft Security Essentials.
    This tool is designed to fix un-installation issues like, MSE registry issues, removes remnants of Microsoft Security Essentials from your computer.
    a. To do this run the FixIt tool from the following links.
    b. Click the below link and select Run Now button.
    http://support.microsoft.com/mats/Program_Install_and_Uninstall
    c. After downloading and running for the first time
    d. Select Run on small pop-up window and select Run on Internet Explorer-Security Warning Window.
    e. Select Detect problems and let me select the files to apply.
    f. Select Uninstalling.
    g. After detecting problems Select Microsoft Security Client to uninstall and click Next.
    h. Repeat the steps from b to f and, this time select Microsoft Antimalware from list to uninstall and click Next.
    i. Restart your computer and reinstall Microsoft Security essentials.

    ***********************************************************

    If that doesn't work, please proceed with the advanced removal process:
    Further down is a set of commands which will be executed automatically in the background. You need to save this file as "mseremoval.bat" on desktop and run that batch file.
    msremoval.txt is given at the end of the post - copy and paste into notepad and follow above information

    Uninstall and removal of Microsoft Security Essentials files and folders using advanced method
    Before proceeding, make sure that you have first attempted to uninstall Microsoft Security Essentials via Control Panel - Programs.

    a. Open Notepad
    b. Copy the lines between **** MSREMOVAL.TXT ****
    c. Paste the copied lines into Notepad
    d. In Notepad, select File/Save As
    e. In the File Name section, enter the name as "mseremoval.bat" with quotes and click Save.
    f. In the Save As Type, select All Files.
    g. Right click on mseremoval.bat and select Run.

    h. A command prompt window will open, the necessary steps will be performed and then it will pause at the end. You can see and copy the results from there. When you depress any key, the command prompt window will close. Once this window closes you can delete the mseremoval.bat file that you created earlier in these steps

    i. Restart the computer and reinstall Microsoft Security Essentials.



    **** MSREMOVAL.TXT **** (don't copy this line but do copy everything below)
    cd /d "%ProgramFiles%\Microsoft Security Client"
    TASKKILL /f /im MsMpEng.exe
    TASKKILL /f /im msseces.exe
    TASKKILL /f /im MpCmdRun.exe
    net stop MsMpSvc
    sc delete MsMpSvc
    REG DELETE "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\MsMpSvc" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Security Client" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Microsoft Antimalware" /f
    REG DELETE "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Current Version\Run\MSC" /f
    REG DELETE "HKEY_CLASSES_ROOT\Installer\Products\4C677A77F01DD614880F352F9DCD9D3B" /f
    REG DELETE "HKEY_CLASSES_ROOT\Installer\Products\4D880477777087D409D44E533B815F2D" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Security Client" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{774088D4-0777-4D78-904D-E435B318F5D2}" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{77A776C4-D10F-416D-88F0-53F2D9DCD9B3}" /f
    REG DELETE "HKEY_CLASSES_ROOT\Installer\UpgradeCodes\1F69ACF0D1CF2B7418F292F0E05EC20B" /f
    REG DELETE "HKEY_CLASSES_ROOT\Installer\UpgradeCodes\11BB99F8B7FD53D4398442FBBAEF050F" /f
    REG DELETE "HKEY_CLASSES_ROOT\Installer\UpgradeCodes\26D13F39948E1D546B0106B5539504D9" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\4C677A77F01DD614880F352F9DCD9D3B" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\4D880477777087D409D44E533B815F2D" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\11BB99F8B7FD53D 4398442FBBAEF050F" /f
    REG DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\1F69ACF0D1CF2B7 418F292F0E05EC20B" /f
    takeown /f "%ProgramData%\Microsoft\Microsoft Antimalware" /a /r
    takeown /f "%ProgramData%\Microsoft\Microsoft Security Client" /a /r
    takeown /f "%ProgramFiles%\Microsoft Security Client" /a /r
    REM Delete the MSE folders.
    rmdir /s /q "%ProgramData%\Microsoft\Microsoft Antimalware"
    rmdir /s /q "%ProgramData%\Microsoft\Microsoft Security Client"
    rmdir /s /q "%ProgramFiles%\Microsoft Security Client"
    REM Stop the WMI and its dependency services
    sc stop sharedaccess
    sc stop mpssvc
    sc stop wscsvc
    sc stop iphlpsvc
    sc stop winmgmt
    REM Delete the Repository folder.
    rmdir /s /q "C:\Windows\System32\wbem\Repository"
    sc stop
    PAUSE
    EXIT
    **** MSREMOVAL.TXT **** (don't copy this line but do copy everything above)


    Alternate manual removal method #1 that you can try:

    The following information was provided by forum user, Aiscer (updated by PrashantKumar96), to assist in removing MSE if using Control Panel/Programs does not work properly:


    1. Download the MSE installer for your Operating System from the MSE Home Page. Save it to your Desktop.
    2. Open Command Prompt through RUN or Start Search by typing CMD hit enter. If you are using Vista or Windows 7 right click on CMD and select "Run as Administrator".
    3. In the Command Prompt console type: CD %USERPROFILE%\Desktop <- Hit ENTER
    4. Type: mseinstall.exe /U

    [Notice space between ...exe and /U]
    5. Hit ENTER and this should uninstall Microsoft Security Essentials.
    6. After the uninstall you can now attempt installation. It would be best that you restart your system first after the uninstall.




    Alternate manual removal method #2 that you can try:

    Note: Editing the registry incorrectly can cause your system to become unusable. Proceed with caution.
    You may wish to backup the registry before proceeding - http://windows.microsoft.com/en-US/w...p-the-registry

    Use the Registry Editor to delete the following key from the Registry.
    On XP, go to Start, then Run, and type:
    Regedit.exe
    Press Enter
    On Vista/Windows 7, in the Search box above the Start "orb" type:
    Regedit -don't press enter.
    Right click regedit.exe in the results list above and select, "Run as Administrator"

    Navigate to:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Security Essentials
    by expanding the branches in the left pane until the branch for Microsoft Security Essentials is displayed.
    Right click "Microsoft Security Essentials" in the left hand pane and select Delete.
    Close the registry editor.

    Then:

    XP:
    Click on the Start Menu, go to All Programs, Accessories, Command Prompt
    A “DOS” window opens
    Assuming that your system drive is C: -
    At the prompt, type:
    CD C:\program files\microsoft security client\backup\x86
    Press Enter
    Type:
    setup.exe /x
    Press Enter
    Setup will launch and will uninstall MSE

    Vista and Windows 7:
    Type command in the search box (above the Start “orb”), do not press enter
    In the results list above, under Programs, right click Command.exe and select "Run as Administrator"
    Approve the action via the UAC prompt, if it appears.
    A “DOS” window opens.
    Assuming that your system drive is C: -
    At the prompt, type:
    CD C:\Program Files\Microsoft Security Client\Backup\x86 (for 32 bit Windows)
    CD C:\Program Files\Microsoft Security Client\Backup\amd64 (for 64 bit Windows)
    Press Enter
    At the prompt (c:\Program Files\Microsoft Security Client\Backup\x86> [or amd64>]), type:
    Setup.exe /x
    Press Enter
    Setup will launch and will uninstall MSE
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